Arata Kaizaki (27) quit the job he got after graduation in just three months. His life hasn't gone well since then. Now his parents threaten to cut off his money and want him to return to the country. He has no friends or girlfriend to share his problems with... as he hits rock bottom, a strange man named Ryou Yoake appears. He invites Arata to join a social rehabilitation program for NEETs called ReLife. This program uses a mysterious substance to make him look younger and sends him back to high school for a year...